How to Enable Supecache on Winframe and Metaframe

Supercache is the new caching technique introduced by Citrix in hotfix # 16 for MF1.8 ME180016.EXE and for MF 1.0 in #44 ME100044.exe and in hotfix #99 for Winframe 1.7 at SE17B099.EXE

SuperCache is a new caching technique that can result in a large improvement in usability and performance over a slow connection, or for applications that tend to redisplay a large area of the screen in response to small localized changes. Example applications that will show a large caching improvement over a slow connection are Microsoft Internet Explorer (IE) and Visual FoxPro.

Supercache is disabled by default even after you install the hotfix and requires a reboot once it is enabled!

To enable it type at a command prompt:

Keysync ICAThinwireFlags /Enable:2

When SuperCache is enabled, large bitmaps are displayed in a number of columns in left to right order, instead of top to bottom order. This is readily apparent when running a client over a slow line. If this characteristic behavior is not observed, the SuperCache functionality has not been activated.

If you want to disable SuperCache functionality, run the following command at a command prompt at each server on which you want to disable the SuperCache functionality:

Keysync ICAThinwireFlags /Disable:2

NOTE: The server must be rebooted in order for either change to take effect.